Flange for tubes.



J. B.. TANNER. l FLANGE FOR TUBES.

9. 0 9 1 0, .2 L n... A d .Lw 9 kmm B E. nl D E W E N E E um 0 9 1 4M 2 um E F. D E L I F N 0 I T. A o I. L P u... A 6. 8, .1

.INVENIDR RM @QW/@MM ATTORNEY UNITED srArEs PATENT OFFICE;

4JULIUS R. TANNER, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE PITTSBURGH VALVE, FOUNDRY & CONSTRUCTION COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION or PENNSYLVANIA. j

speciacan of Letten rate-nt.

FLANG-E FOR TUBES Patented April 20, 1909.

Application led February 24;, 1908, Serial No. 417,259. Renewed February 6, 1909. Serial No. 476,316.

Tonall whom it may concern: I Be it known that I, JULIU's R. TANNER, a .citizen of' the United States, residing `at Pittsburg, in the county of Allegheny and 5 State of Pennsylvania, have invented ordiscoveredl new and useful Improvements in Flanges for Tubes, of which the following is a speciication.

My `invention relates to iianges intended -for welding to the ends oftubes.

The object of 1 11 `invention is to rovide a flange which may be welded to a tu e by the blow-pipe process and `which will allow' the abutting or contiguous endsof the ange and tube, to Ibe equal y heated, so that the weld will loepl rfect and the end of the tube will not beiburned.

Referring to the` drawing'` accom anying this specification, the gure thereon hows in longltudinal section a tube weldedl tothe pre- "erred form of flange constitutingmy invenlon. t Y- A wrepresents my roved `flange as Va j whole. It has the axiafopening B and the flange member C extendin'atl'a right angle thereto. It also'has the'range'member D 'extending at a right angle to'-the member C and is really4 a tubular extension beyond one face of the member C, the opening therein b einga continuation or apart of the said openmg B. Where the `member, C meets the member D, the latter `member is reinforced by making thel wall thereof graduall thicker from the outerend ofthe member toward the member C, as shown-.clearly on the draw- E isatube having its axial opening F of the same diameter asthe oplening B and line therewith, the ends of t y member DV of the ange A preferabl abutting so as to form a butt-weld joint when the welding has been completed. The wall of the tube E is thinner-than'the end of the member D would have been if the same had not been reduced as shown at Gr,- the said reduced end of the member D forming the ex# tenor-shoulder H at its juncture with the normal Wall of the said member. The pore tube and the tion G has its wall substantially of the same thiclmess as the wall of the tube E, Preferably the contiguous ends of the tube and member D are beveled sd'as to form at their juncturea lV-shaped annulargroove K.

' y A blow-pipe flame is directed against the Walls of the V-shaped groove and along the reduced portion G and the shoulder H of the member D and along a portion of the tube E adjacent to the joint. along the said heated portions becomes su'ciently fused to make a good weld, metal is introduced into the flame, the molten metal drooping'upon the said heated portions and filling the space between the shoulder H and the outer limit of the heated portion ofthe tube-E, as shown bythe letter M. If the member D had continued on to -the end of the same Without the reduction thereof to the thickness of the tube E, the member D being thicker then the tube end would have conducted more heat of the blowpipe away from the jointv thanthe thinner endvof the tube E would have conducted. The result would be that the tube end would become burned before the end of the member D wouldI be hot enough to make a proper weld. This vhas been the defect in welding rings to the exterior of tubes, as the thick wide ring draws oi so much heat from the 'oint that 4the tube is heated too hot or urned before the ring has become suf-f1- cientlyhot. f

1Vlith the iiange shown and described, the reduced portion G being of the same thickness as the tube E, or somewhat thinner than the same does not conduct appreciably more heat from the joint than the tube itself. The reduced portion G is made sufficiently long or thin, or both, to make the conduction away from the joint sub'- stantially eqal or the difference so slight as to benegligi le. Y

I claim- 1. In arwelded'pinga metal tubeya metal Iiange havingV a Vange member at an angle to the axisof said iiange and a second flange member parallel to the axis of said fiange and having its end abutting the end of said tube, said second member having the end contiguousto the end of the tube reduced substantiall Vto thethickness of the tube, and a wel ing material covering and weldedto the adjacent ends of the tube andthe second member.. d

2. Thel process of. welding together the 'ends of twotubular bodies having walls of different thicknesses, which consists in re-A As soon as the metal mme ducng the thickness of the Wall of the i Signed at Pittsburg, PSL., this 20th day of l icke tlbe sg. hh en tfo bedwdd, thn February, 1908.

ein tereuee'en osa t'ee1tue1 Y TN U pn eongfaet with the end of the other tube, JULJD h' um NM" and then fusing the metal adjacent to the Vitnesses: joint, and supplying fused meta towzover i F. N. BARBER, the said joint. f. M. A.. BARTH. 

